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Finding the Fourth Proportional to 182.43, 274.10 and 128.43

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Solution

The fourth proportional to 182.43, 274.10 and 128.43 is: 192.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.43 : 274.10 = 128.43 : x
  2. Step 2: Convert to fraction form
    182.43/274.10 = 128.43/x
  3. Step 3: Cross multiply
    182.43x = 274.10 × 128.43
  4. Step 4: Simplify right side
    182.43x = 35,202.02
  5. Step 5: Solve for x
    x = 35,202.02/182.43
  6. Step 6: Final answer
    x = 192.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.